Effects of functional endoscopic sinus surgery on the acoustics of the sinonasal tract
| Autor: | Johan Sundberg, Andreas Maier, Sven Becker, Thorsten R. C. Johnson, Miriam Havel, Maria Schuster |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Voice Quality
Speech Acoustics 030507 speech-language pathology & audiology 03 medical and health sciences 0302 clinical medicine Cadaver Paranasal Sinuses otorhinolaryngologic diseases medicine Humans Sine tone 030223 otorhinolaryngology Sinus (anatomy) business.industry Endoscopy General Medicine Functional endoscopic sinus surgery Sinonasal Tract Anatomy Paranasal sinuses medicine.anatomical_structure Otorhinolaryngology Nasal Cavity Tomography X-Ray Computed 0305 other medical science Cadaveric spasm business Vocal tract |
| Zdroj: | Rhinology journal. 55:81-89 |
| ISSN: | 0300-0729 |
| Popis: | Background: Nasal and paranasal cavities are supposed to contribute substantially to the vocal tract resonator properties. However, their acoustical effects as well as the effects of sinus surgery on the voice remain unclear. In this work we investigate resonance phenomena of paranasal sinuses prior to and after various rhinosurgical procedures in cadaveric human sinonasal tracts and corresponding 3D casts. Methodology: Nasal and paranasal cavities of formalin-preserved cadavers and corresponding 3D replicas were excited by sine tone sweeps from an earphone placed in the epipharynx.The response was picked up by a microphone at the nostrils. Different FESS procedures were performed and the acoustical responses following excitation were recorded.The measured acoustical changes in the obtained transfer functions were then evaluated. Results: Marked low frequency dips were detected in the transfer functions when sinus cavities were included in the nasal resonator system. These dips showed a significant correlation with sinus volumes. Following FESS procedures they moved upwards in frequency depending on the extent of the surgical intervention. Conclusions: The transfer functions obtained in cadaveric situs and 3D replicas showed dips at the resonance frequencies of the paranasal cavities. Marked acoustic effects in terms of increase in dip frequency following FESS procedures were reproducibly documented. |
| Databáze: | OpenAIRE |
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